Add with-redefs

Remove duplication by using with-redefs in binding

fix r1798 regression on seq, get, reduce for extend-type on natives.

symbol hash code sanity check

CLJS-418: Update POM template to new G.Closure release

`get-in` behaves incorrectly on values

Values which don't satisfy `ILookup` are handled incorrectly.

CLJS-415: Speed up cljsc by exiting after output has been printed

Update boostrap & POM with new dependencies for next release

* In the pom.xml template:
  * Google Closure Compiler r2180
  * Google Closure Library r2029
  * Mozilla Rhino 1.7R4

* In script/bootstrap:
  * Google Closure Library r2029
  * Already uses latest Google Closure Compiler (r2180)

CLJS-393: Bugfixes for PersistentTreeMap: sorted-map-by and -sorted-s…

…eq-from

compiler warns on deprecated function and protocol use

If a deprecated function is invoked or a deprected protocol is
implemented the compiler will issue a warning.

These warnings can be suppressed by binding *cljs-warn-fn-deprecated*
to false or by attaching the ^:deprecation-nowarn metadata to the
invocation form or to the protocol symbol.

Fix dissoc implementation for Records

Included tests